You have several options:
1) Depending on how complex the shape is, you could draw it as a single patch object and modify the vertex locations as needed.
2) Put the graphics primitives into an hggroup object. The hggroup handle can serve as a single reference, but your code that modifies the coordinates would still need to access the handles of the underlying graphics primitives.
3) Put the graphics primitives into an hgtransform object. This is similar to an hggroup, but you can apply affine transformations such as scaling, rotation, translation, and shear via the Matrix property of the hgtransform. (Note that the help documentation incorrectly states that shear transformations are not allowed for hgtransform objects. See my File Exchange program obliqueview for an example.)
